cheilosis

noun
chei·​lo·​sis | \ kī-ˈlō-səs How to pronounce cheilosis (audio) \
plural cheiloses\ -​ˌsēz How to pronounce cheiloses (audio) \

Medical Definition of cheilosis

: an abnormal condition of the lips characterized by scaling of the surface and by the formation of fissures in the corners of the mouth

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